빛, 열, 움직임, 압력 등 환경적 입력을 감지하고 측정하여 반응하는 장치.
A device designed to detect, measure, and respond to environmental inputs such as light, heat, motion, or pressure.
예문:
"The car's parking assist system relies on ultrasonic sensors to detect obstacles."
"Modern smartphones contain multiple tiny sensors, including accelerometers and gyroscopes."
"If the temperature sensor fails, the heating system might overheat the building."